Shaper guard



Aug. 6, 1940.

H. E. TAUTZ ET AL SHAPER GUARD Filed June 19, 1937 FIG, 1

il ai 4'2/ T' 1 2 Sheets-Sheet l J8 -L J6 WITNESSES f5 @Ma Aug- 6, 19401 H. E; TAU-rz 'Er An. 2,210,135

`K SHAPER GUARD. l Filed June 19, 1937 2 'sheets-sneer 2 FIG' 5 K FIGA?Advl @@g T'TORNE.

/NVEN TOALS` Patented Ang.

' PATENT oFFicE SHAPEB GUARD Herbert E. Tautl and Paul E'. Butzin,Milwaukee, Wis., assignors to The Delta lifanufucturing Company,Milwaukee, Wis., a corporation of Wisconsin Application June 19, 1937,Serial No. 149,130 5 Claims. (Ci. 'i4-611) The invention relates tomachineryv guards and more particularly to guards and motor mountingsfor shaper drives and the like.

An object of the invention is to provide im- 5 proved guard means ofsimple, neat and -linexpensive construction for enclosing and adequatelyprotecting thefbelt drive oi a bench shaper or other machine. y

Another object of the invention is to provide a lo combined guard andmotor mounting which is capable of simple attachment to the flat top ofa tabular'support carrying, the machine and.

which is readily shiftable along the at top to adjust the belt drive. l5A further object is to provide guard means which will permit easy accessto the belt drive and driven member.

The invention further consists in the several features hereinafterdescribed and claimed. AnY embodiment of the invention is illustrated inthe accompanying drawings, wherein Fig. 1 is a side elevation of a benchshaper equipped with guard and motor mounting means of the invention,parts being broken away and parts being shown in section;

Fig. 2 is a sectional view taken generally along the line 2-2 of Fig. 1;

Fig. 3 ls an end view of a motor-mounting guard, member, parts beingomitted and broken away and parts being shown in section; l

Fig'. 4 is a top plan kview of the motor-mount-v ing guard member, acover plate thereof being omitted;

Fig. 51s a bottom plan view of a cover plate for 35 the motor-mountingguard member;

Fig. 6 is an elevation of a spindle pulley guard member;

'Flg. 'I is a bottom plan view of the spindle puli ley guard member, and

4 une s-a of Fig. l,1.

In'these drawings, I0 designates a shaper table.

provided with legs II resting on the at topsurface of a legged stand orbench I2to which they are secured by'bolts I3. The shaper table isfurther provided with a gage-guiding groove I4 and a rabbeted opening I5adapted to receive therethrough a vertical shaper spindle I6. Thespindle is slidably and rotatably supported in any suitable manner, andis here shown to be journalled in a quill I1 vertically slidable in ahousing I3 which is secured to the bottom face of the table. The quillis raised and lowered as by means of an arm I9 secured thereto and passv55 ing through a'helical cam slot 20 inthe housing,

Fig. 8 is' a.' detail sectional view taken along the I and the quill isclamped in position by suitable means including a clamping rod 2| andsurrounding clamping tube 22. The spindle preferably comprises a hollowmain spindle-member and an auxiliary spindle member which latter carries5 a detachable cutter 23 andis interchangeable with other spindlemembers, being detachably secured to the main spindle member by a stud24 and a nut 25. A grooved pulley 26 is keyed on the lower end of themain spindle member 10 -and is clamped thereon by a nut 21, the pulleybeing above the planel of the bench top and havfing its axisperpendicular to this plane. The rabbeted table opening I5 is preferablyprovided with a removable apertured insert 28 l5 vthrough which theauxiliary spindle member extends. The shaper construction thus fardescribed is similar to that shown in United States Patent 2,045,422,issued June 23, 1936, to Herbert E. Tautz.

A guard member or bracket 29 has a flat bottom or base portion slidablyresting onthe at top surface of the stand or bench I2 and is providedwith flanges 30 at opposite sides having slots 3I to receive bolts 32which adjustably clamp 25 the guard member to the bench. The sideportions of the guard member nearest the spindle are joined by an angleshaped tie bar 33. The inner end oi the guard member 29 extends betweenlegs II of the Shaper table and the outer end overhangs an edge of thebench 'and has secured thereto by screws 34 a downwardly projectingmotor mounting plate 35 provided with screw-receiving slots 36, theplate being adjacent an edge of the bench and extending-below the planeof the bench top. An electric motor 31 is adjustably secured to themounting plate 35 by screws 3,3 passing through the slots 36 and has avertical shaft 3 9 parallel to the shaper spindle and passing through.an opening 40 o formed in an elevated bottom portion of the guardmember. The motor shaft 39 carries a wide-faced flanged pulley 4I, whichis drivingly connected to -the spindle pulley 26 by a V-belt 42, thebelt having a side-driving engagement with thespindle pulley. The guardmember 29 is provided with an upstanding marginal flange 43 to enclosethe belt drive. The top portion of the guard member is preferably formedby a detachable cover plate 44 having a downwardly 50 projectingmarginal ange 45 resting on side lugs 46 and an end lug 41 formed on theguard member flange '43. The cover plate is positioned by means of sidelugs 43 and an end lug 49 which project downwardly to engage the innerface of the guard member iiange I3, the end lug l! being coniinedbetween shoulders 5l formed on the guard member flange. An upstandingstud 5I is secured to the central portion oi' the guard member andpasses through an opening i2 in the covei plate. A thumb nut 63 isscrewed onto the stud to hold the cover plate in place. A dome-shapedprojection 54 on the cover plate affords clearance for the upper end ofthe motor shaft.

A pulley guard 65 detachably encloses the spin- -dle pulley and forms acontinuation of the guard member 29 and its cover plate. The pulleyguard 55 rests on the flat top surface of the stand or bench i2 and isprovided with a bottom web 58 having a slot 5l to receive a clampingscrew 58. there being vertical stiil'ening flanges I9 on opposite sidesoi the slot 6l. The screw Il passes through a slot in the bench top,Figs. l and 8, and has flattened sides, Fig. 8, engaging the edges ofthe slot to prevent relative rotation. A hand nut 6i engages the screwbelow the bench, and a coiled spring 62 surrounding the screw above thebench top engages washers 63 on the screw and urges the screw upwardlyto facilitate placement of the pulley guard into guarding position. Aknob 6 on the pulley guard permits easy detachment and replacement ofthe guard. The upper portion of the pulley guard has an inturned ange 65forming a slot 68 to admit the lower end of the spindle housing I8.

The tension on the belt 42 is adjusted by sliding the motor-carryingguard member'29 in or out along the flat top of the bench l2 with thescrews `:l2 slightly loosened, these' screws then being tightened topreserve the adjustment and to clamp the guard member iirmly in place.Replacement of the belt is readily effected by removing the pulley guard55 and cover plate I4, and readjusting the motor-carrying guard member.The slldable mounting or'the pulley guard 55 on the bench top permitsthis guard to be brought closegto the motor-carrying guard member in alladjustments of the vlatter member. The pulley guard is quickly removableand relplaceable so as to facilitate the changing of the shaperspindles. To remove the pulley guard the hand nut 6i is loosened and theguard is drawn outwardly by its knob 6I, the guard sliding f on the attop of the bench i2. To replace the pulley guard is equally simple.

The dat top of the bench or other tabular support on which the machineis mounted presents an aligning surface to insure `proper positioning ofthe guards with respect to each other and to the pulley of the machine.

When the Shaper is in use, the guard adequately encloses and protectsthe belt drive of the shaper, so as to prevent injury to nearby personsand also to prevent damage to the belt drive by objects falling ormoving in the vicinity of the shaper. The guard also forms an adjustablemounting for the driving motor of the machine, permitting readyadjustment ofthe belt tension. The guard does not interfere with thevertical adjustment of the shaper spindle by the arm I9. During suchadjustment the belt shifts laterally on the wide-faced motor pulley Il.but remains enclosed within the guard means.

What we claim as new and desire to secure by Letters Patent is:

1. The combination, with a tabular support having a nat top, and amachine resting on and secured to said at top and having a pulley abovethe plane of said dat top, of a guard having a base portion resting onsaid iiat top, means for releasably clamping said guard to said at top.a motor carried by said guard` and having a shaft with a pulley, and abelt connecting said motor pulley and machine pulley, said guard havingwall portions for enclosing said belt and motor pulley, and said guardbeing slidably shittable along the fiat top o! said support to adjustthe belt tension. Y

2. The combination, with a tabular support havinga fiat top, and amachine resting on and secured to said'at top and having a pulley abovethe plane of said at top, of a guard having a base portion resting onsaid at top, means for releasably yclamping said guard to said at top, amotor carried by said guard and having a shaft with a pulley, a beltconnecting said motor pulley and machine pulley. said guard having wallportions for enclosing said belt and motor pulley, and said guard beingslidably shiitable along the dat top of said supportto adjust the belttension, and a pulley guard for said pulley resting on and releasablyvsecured to the iiat top of said support and forming a separablecontinuation of said motor-carying guard, said pulley guard beingslidably shiftable along said at top to bring said guard into and out ofguarding position.

3. The combination, with a tabular support having a flat top, and amachine resting on and secured to said flat top and having a pulleyabove the plane of said flat top and arranged with its axis of rotationperpendicular to said plane, of a guard having a base portion resting onsaid dat top, means for releasably clamping said guard to said iiat top,a motor carried by said guard with its shaft parallel to said pulleyaxis, said motor shaft having apulley, and a belt connecting the motorpulley and machine pulley, said guard having hood-forming wallsenclosing said belt and motor pulley, and said guard being slidablyshiftable along the fiat top of said support to adjust the belt tension.

4. The combination, with a tabular support having a nat top, and amachine resting on and secured to said fiat top and having a pulleyabove the plane of said dat top andl arranged with its axis of rotationperpendicular to said plane, of a guard having a base portion resting onsaid ilat top, means for releasably clamping said guard to said fiattop, said guard having a portion overhanging the at top of said supportand provided with a downwardly projecting part, a motor secured to saiddownwardly projecting part and having a vertical yshaft with a pulleythereon extending above the plane of the iiat top of said support, and abelt connecting said motor pulley and-machine pulley. said guard havinga hood portion enclosing said belt and said motor pulley, and said guardbeing shlftable along the ilat top of said support to adjust the tensionof the belt.

5. 'Ihe combination, with a tabular support having a flat top. and amachine resting on and secured to said iiat top and having a pulleyabove the plane of said flat top and arranged with its axis of rotationperpendicular to said plane, of a guard for said pulley comprising alaterally opening housing shell extensible about said pulley and havinga bottom portion resting on said iiat top. and releasably secured tosaid dat top, said guard being slidably shiftable on said nat top toplace said guard into and out of pulley-guarding position.

HERBERT E.v TAUTZ. PAUL E. BUTZIN.

